6.5
CVE-2017-6030
- EPSS 0.39%
- Published 30.06.2017 03:29:00
- Last modified 20.04.2025 01:37:25
- Source ics-cert@hq.dhs.gov
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A Predictable Value Range from Previous Values issue was discovered in Schneider Electric Modicon PLCs Modicon M221, firmware versions prior to Version 1.5.0.0, Modicon M241, firmware versions prior to Version 4.0.5.11, and Modicon M251, firmware versions prior to Version 4.0.5.11. The affected products generate insufficiently random TCP initial sequence numbers that may allow an attacker to predict the numbers from previous values. This may allow an attacker to spoof or disrupt TCP connections.
Data is provided by the National Vulnerability Database (NVD)
Schneider-electric ≫ Modicon M241 Firmware Version <= 4.0.3.20
Schneider-electric ≫ Modicon M251 Firmware Version <= 4.0.3.20
Schneider-electric ≫ Modicon M221 Firmware Version <= 1.1.1.5
Zu dieser CVE wurde keine CISA KEV oder CERT.AT-Warnung gefunden.
Type | Source | Score | Percentile |
---|---|---|---|
EPSS | FIRST.org | 0.39% | 0.574 |
Source | Base Score | Exploit Score | Impact Score | Vector string |
---|---|---|---|---|
nvd@nist.gov | 6.5 | 3.9 | 2.5 |
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
|
nvd@nist.gov | 6.4 | 10 | 4.9 |
AV:N/AC:L/Au:N/C:N/I:P/A:P
|
CWE-331 Insufficient Entropy
The product uses an algorithm or scheme that produces insufficient entropy, leaving patterns or clusters of values that are more likely to occur than others.
CWE-343 Predictable Value Range from Previous Values
The product's random number generator produces a series of values which, when observed, can be used to infer a relatively small range of possibilities for the next value that could be generated.